TrafficJunky.com Advertising.

You do not need a referral for this. Since everyone works for Pornhub in some form and it is their advertising your add will be displayed from members sites here anyway.

See sig for traffic that convert Cam, Games, Dating and other vertical.

the answer is quite easy.
this and a few other adnetworks are existing already many years and the are booked.
if you belive that advertisers give money to networks because they have too much from it, they would be very bad business man.

converting traffic into sales is (as long as the source does not send you faketraffic - but than it would not last long) a question of advertising strategy and knowledge about all the technical and datawork what have to do with it.
it is also sometimes a long way of try and error til you find the right tap for the right pot and last not least it is a question of competition.
if the lifetime value for a single user is for you 100 and for another one 300 because he is driving another concept - the one with 300 can pay more for the same traffic and/or wait longer til he gets his investment back.

a network that sells traffic has not the task to market this traffic as cheap as possible but as expensive as possible - otherwise it would not make any sense for the publishers either. so as an advertiser you just have to be ready and able to compete with the best. this is not easy but possible.